Mount Vesuvius is an active volcano near the city of Naples, Italy. It is best known for its eruption in AD 79 that destroyed the city of Pompeii. Vesuvius remains one of the most dangerous volcanoes in the world due to the large population living near its slopes, including over 2 million people in the city of Naples. While its last eruption was in 1944, Vesuvius remains active today, posing a threat to the nearby communities.